Gel hydration unit

Abstract

A fracking fluid hydration unit is provided that has a plurality of hydration tank sections wherein shear is added to the hydrated fluid flow via a recirculation hydrated fluid jetting system.

What is claimed is: 
     
         1 . A method of hydration of a hydratable polymer into a hydrated fluid, the method comprising:
 providing a hydratable polymer and water mixture into a tank;   allowing the mixture of hydratable polymer and water to become a hydrated fluid in the tank;   pumping a portion of the hydrated fluid, as recirculated hydrated fluid, from the tank and recirculating at least a portion of the recirculated hydrated fluid into a jetting system;   jetting, using the jetting system, the recirculated hydrated fluid back into the tank and creating shear between the jetted recirculated hydrated fluid and the hydrated fluid in the tank; and   extracting at least a portion of the hydrated fluid from an output of the tank.   
     
     
         2 . The method of  claim 1 , wherein the tank comprises N tank sections, wherein providing the mixture comprises pumping the mixture into a first tank section of the N tank sections; and wherein allowing the mixture further comprises allowing the mixture of hydratable polymer and water to become a hydrated fluid while moving from a first one of the tank section to an Nth one of the adjacent tank sections, where N is an integer that is greater or equal to two. 
     
     
         3 . The method of  claim 2 , wherein pumping a portion of the hydrated fluid includes extracting hydrated fluid from at least one recirculation location that is in at least one of the N adjacent tank sections. 
     
     
         4 . The method of  claim 1 , wherein the jetting system comprises at least one jet pipe configured to jet the recirculated hydrated fluid into at least one of the N adjacent tank sections. 
     
     
         5 . The method of  claim 1 , further comprising subjecting the mixture to a first static mixer prior to providing the mixture into the tank. 
     
     
         6 . The method of  claim 1 , further comprising subjecting the recirculated hydrated fluid to a second static mixer prior to jetting. 
     
     
         7 . The method of  claim 1 , wherein the jetting system comprises: a jet manifold configured to carry the recirculated hydrated fluid; and a plurality of jet tubes, wherein each jet tube comprises at least one jet port positioned about the jet tube's length. 
     
     
         8 . The method of  claim 2 , wherein a pumping rate of the mixture in the step of pumping the mixture into a first tank is less than or equal to the pumping rate of pumping a portion of the hydrated fluid as recirculated hydrated fluid. 
     
     
         9 . The method of  claim 1 , further comprising injecting hydratable polymer into the recirculated hydrated fluid. 
     
     
         10 . The method of  claim 2 , wherein the hydrated fluid moves through at least N- 1  tank sections before arriving at the Nth adjacent tank section. 
     
     
         11 . A hydration unit comprising:
 a tank configured to contain hydrated fluid, the tank having a fluid inlet area and a fluid output area such that the hydrated fluid moves generally from the fluid inlet area to the fluid output area;   a hydrated fluid return pipe configured to carry hydrated fluid, as recirculated hydrated fluid from a recirculation location;   a mixing pump configured to draw recirculated hydrated fluid from the hydrated fluid return pipe and provide the recirculated hydrated fluid to a mixing pump output;   a jetting system configured to receive at least a portion of the recirculated hydrated fluid pumped from the mixing pump; the jetting system comprising:
 a jet tube manifold having at least one manifold output; and 
 a first jet tube extending from a first one of the manifold outputs and into the tank, the first jet tube being further configured to be at least partially submerged in hydrated fluid when hydrated fluid is present in the tank, the first jet tube comprising at least one jet outlet configured to jet hydrated fluid in a direction within the tank in order impart shear on both the recirculated hydration fluid and hydration fluid present in the tank; and 
   the tank fluid output area is connected to a tank hydration fluid output configured to selectively allow hydrated fluid to exit the tank.   
     
     
         12 . The hydration unit of  claim 11 , wherein the tank is sectioned into N tank sections such that each tank section has a tank section fluid inlet area and a tank section fluid output area configured such that the hydrated fluid generally moves from a first one of the N adjacent tank sections to an Nth one of the N adjacent tank sections via the tank section fluid inlet area and tank section fluid output area of each one of the N tank sections respectively. 
     
     
         13 . The hydration unit of  claim 11 , further comprising:
 a water input section configured to accept water from at least one water source and provide a water flow path;   a polymer phase gel input valve section configured to accept a measured flow of polymer phase gel and provide the flow of polymer phase gel into the water flow path to create a mixture of polymer phase gel and water; and   a suction pump configured to receive the mixture of polymer phase gel and water and to pump the mixture through a fluid mixture output into the tank at the fluid inlet area as hydrated fluid.   
     
     
         14 . The hydration unit of  claim 11 , wherein the tank is configured to direct hydrated fluid to move from the fluid inlet area of the tank to the fluid output area of the tank in a minimum amount of time that is greater than between 0.75 to 1.5 minutes. 
     
     
         15 . The hydration unit of  claim 13 , wherein the suction pump is configurable to pump the mixture into the fluid inlet area of the tank as hydrated fluid at a first flow rate that is equal to or less than a selected flow rate that the hydrated fluid exits the tank hydration fluid outlet. 
     
     
         16 . The hydration unit of  claim 15 , wherein the mixing pump provides the recirculated hydrated fluid to the jetting system at a flow rate that is configurable to be equal to or greater than the first flow rate. 
     
     
         17 . The hydration unit of  claim 12 , wherein the tank fluid outlet area is located in the Nth tank section. 
     
     
         18 . The hydration unit of  claim 11 , wherein the hydration unit is adapted to be mounted on a vehicle or trailer. 
     
     
         19 . A fluid hydration device comprising:
 an input section adapted to receive a fluid;   a hydratable polymer input section wherein a hydratable polymer is combined with the fluid to create a mixture;   a first pump adapted to pump the mixture into a first tank section of a hydration tank as a hydrated fluid at a first selected flow rate, the hydration tank being divided into a plurality of tank sections comprising the first tank section, the plurality of tank sections being adjacent to each other and establishing a hydrated fluid flow path from the first tank section to a last tank section of the plurality of tank sections;   a hydrated fluid recirculation route configured to extract hydrated fluid from one of the of tank sections and to pump the extracted hydrated fluid through a jetting system at a recirculation flow rate, the jetting system comprising:
 a jet pipe configured to extend into one of the plurality of tank sections, the jet pipe being configured to receive the extracted hydrated fluid and output the fluid via a plurality of fluid jets to cause shear to the hydrated fluid; and 
 a hydrated fluid tank outlet configured to allow a flow of hydrated fluid to exit the hydration tank at a selected exit flow rate.